cpu.h revision 1.34
1 /* $NetBSD: cpu.h,v 1.34 2003/06/23 11:01:08 martin Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1996 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Brini. 21 * 4. The name of the company nor the name of the author may be used to 22 * endorse or promote products derived from this software without specific 23 * prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * RiscBSD kernel project 38 * 39 * cpu.h 40 * 41 * CPU specific symbols 42 * 43 * Created : 18/09/94 44 * 45 * Based on kate/katelib/arm6.h 46 */ 47 48 #ifndef _ARM_CPU_H_ 49 #define _ARM_CPU_H_ 50 51 /* 52 * User-visible definitions 53 */ 54 55 /* CTL_MACHDEP definitions. */ 56 #define CPU_DEBUG 1 /* int: misc kernel debug control */ 57 #define CPU_BOOTED_DEVICE 2 /* string: device we booted from */ 58 #define CPU_BOOTED_KERNEL 3 /* string: kernel we booted */ 59 #define CPU_CONSDEV 4 /* struct: dev_t of our console */ 60 #define CPU_POWERSAVE 5 /* int: use CPU powersave mode */ 61 #define CPU_MAXID 6 /* number of valid machdep ids */ 62 63 #define CTL_MACHDEP_NAMES { \ 64 { 0, 0 }, \ 65 { "debug", CTLTYPE_INT }, \ 66 { "booted_device", CTLTYPE_STRING }, \ 67 { "booted_kernel", CTLTYPE_STRING }, \ 68 { "console_device", CTLTYPE_STRUCT }, \ 69 { "powersave", CTLTYPE_INT }, \ 70 } 71 72 #ifdef _KERNEL 73 74 /* 75 * Kernel-only definitions 76 */ 77 78 #ifndef _LKM 79 #include "opt_multiprocessor.h" 80 #include "opt_lockdebug.h" 81 #endif /* !_LKM */ 82 83 #include <arm/cpuconf.h> 84 85 #include <machine/intr.h> 86 #ifndef _LOCORE 87 #include <sys/user.h> 88 #include <machine/frame.h> 89 #include <machine/pcb.h> 90 #endif /* !_LOCORE */ 91 92 #include <arm/armreg.h> 93 94 #ifndef _LOCORE 95 /* 1 == use cpu_sleep(), 0 == don't */ 96 extern int cpu_do_powersave; 97 #endif 98 99 #ifdef __PROG32 100 #ifdef _LOCORE 101 #define IRQdisable \ 102 stmfd sp!, {r0} ; \ 103 mrs r0, cpsr ; \ 104 orr r0, r0, #(I32_bit) ; \ 105 msr cpsr_c, r0 ; \ 106 ldmfd sp!, {r0} 107 108 #define IRQenable \ 109 stmfd sp!, {r0} ; \ 110 mrs r0, cpsr ; \ 111 bic r0, r0, #(I32_bit) ; \ 112 msr cpsr_c, r0 ; \ 113 ldmfd sp!, {r0} 114 115 #else 116 #define IRQdisable __set_cpsr_c(I32_bit, I32_bit); 117 #define IRQenable __set_cpsr_c(I32_bit, 0); 118 #endif /* _LOCORE */ 119 #endif 120 121 #ifndef _LOCORE 122 123 /* All the CLKF_* macros take a struct clockframe * as an argument. */ 124 125 /* 126 * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the 127 * frame came from USR mode or not. 128 */ 129 #ifdef __PROG32 130 #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE) 131 #else 132 #define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR) 133 #endif 134 135 /* 136 * CLKF_BASEPRI: True if we were at spl0 before the interrupt. 137 * 138 * This is hard-wired to 0 on the ARM, since spllowersoftclock() might 139 * not actually be able to unblock the interrupt, which would cause us 140 * to run the softclock interrupts with hardclock blocked. 141 */ 142 #define CLKF_BASEPRI(frame) 0 143 144 /* 145 * CLKF_INTR: True if we took the interrupt from inside another 146 * interrupt handler. 147 */ 148 extern int current_intr_depth; 149 #ifdef __PROG32 150 /* Hack to treat FPE time as interrupt time so we can measure it */ 151 #define CLKF_INTR(frame) \ 152 ((current_intr_depth > 1) || \ 153 (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE) 154 #else 155 #define CLKF_INTR(frame) (current_intr_depth > 1) 156 #endif 157 158 /* 159 * CLKF_PC: Extract the program counter from a clockframe 160 */ 161 #ifdef __PROG32 162 #define CLKF_PC(frame) (frame->if_pc) 163 #else 164 #define CLKF_PC(frame) (frame->if_r15 & R15_PC) 165 #endif 166 167 /* 168 * LWP_PC: Find out the program counter for the given lwp. 169 */ 170 #ifdef __PROG32 171 #define LWP_PC(l) ((l)->l_addr->u_pcb.pcb_tf->tf_pc) 172 #else 173 #define LWP_PC(l) ((l)->l_addr->u_pcb.pcb_tf->tf_r15 & R15_PC) 174 #endif 175 176 /* The address of the vector page. */ 177 extern vaddr_t vector_page; 178 #ifdef __PROG32 179 void arm32_vector_init(vaddr_t, int); 180 181 #define ARM_VEC_RESET (1 << 0) 182 #define ARM_VEC_UNDEFINED (1 << 1) 183 #define ARM_VEC_SWI (1 << 2) 184 #define ARM_VEC_PREFETCH_ABORT (1 << 3) 185 #define ARM_VEC_DATA_ABORT (1 << 4) 186 #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5) 187 #define ARM_VEC_IRQ (1 << 6) 188 #define ARM_VEC_FIQ (1 << 7) 189 190 #define ARM_NVEC 8 191 #define ARM_VEC_ALL 0xffffffff 192 #endif 193 194 /* 195 * Per-CPU information. For now we assume one CPU. 196 */ 197 198 #include <sys/device.h> 199 #include <sys/sched.h> 200 struct cpu_info { 201 struct schedstate_percpu ci_schedstate; /* scheduler state */ 202 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 203 u_long ci_spin_locks; /* # of spin locks held */ 204 u_long ci_simple_locks; /* # of simple locks held */ 205 #endif 206 struct device *ci_dev; /* Device corresponding to this CPU */ 207 u_int32_t ci_arm_cpuid; /* aggregate CPU id */ 208 u_int32_t ci_arm_cputype; /* CPU type */ 209 u_int32_t ci_arm_cpurev; /* CPU revision */ 210 u_int32_t ci_ctrl; /* The CPU control register */ 211 struct evcnt ci_arm700bugcount; 212 #ifdef MULTIPROCESSOR 213 MP_CPU_INFO_MEMBERS 214 #endif 215 }; 216 217 #ifndef MULTIPROCESSOR 218 extern struct cpu_info cpu_info_store; 219 #define curcpu() (&cpu_info_store) 220 #define cpu_number() 0 221 #endif 222 223 #ifdef __PROG32 224 void cpu_proc_fork(struct proc *, struct proc *); 225 #else 226 #define cpu_proc_fork(p1, p2) 227 #endif 228 229 /* 230 * Scheduling glue 231 */ 232 233 extern int astpending; 234 #define setsoftast() (astpending = 1) 235 236 /* 237 * Notify the current process (p) that it has a signal pending, 238 * process as soon as possible. 239 */ 240 241 #define signotify(p) setsoftast() 242 243 #define cpu_wait(p) /* nothing */ 244 245 /* 246 * Preempt the current process if in interrupt from user mode, 247 * or after the current trap/syscall if in system mode. 248 */ 249 int want_resched; /* resched() was called */ 250 #define need_resched(ci) (want_resched = 1, setsoftast()) 251 252 /* 253 * Give a profiling tick to the current process when the user profiling 254 * buffer pages are invalid. On the i386, request an ast to send us 255 * through trap(), marking the proc as needing a profiling tick. 256 */ 257 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 258 259 #ifndef acorn26 260 /* 261 * cpu device glue (belongs in cpuvar.h) 262 */ 263 264 struct device; 265 void cpu_attach __P((struct device *)); 266 int cpu_alloc_idlepcb __P((struct cpu_info *)); 267 #endif 268 269 270 /* 271 * Random cruft 272 */ 273 274 struct lwp; 275 276 /* locore.S */ 277 void atomic_set_bit __P((u_int *address, u_int setmask)); 278 void atomic_clear_bit __P((u_int *address, u_int clearmask)); 279 280 /* cpuswitch.S */ 281 struct pcb; 282 void savectx __P((struct pcb *pcb)); 283 284 /* ast.c */ 285 void userret __P((register struct lwp *p)); 286 287 /* machdep.h */ 288 void bootsync __P((void)); 289 290 /* fault.c */ 291 int badaddr_read __P((void *, size_t, void *)); 292 293 /* syscall.c */ 294 void swi_handler __P((trapframe_t *)); 295 296 #endif /* !_LOCORE */ 297 298 #endif /* _KERNEL */ 299 300 #endif /* !_ARM_CPU_H_ */ 301 302 /* End of cpu.h */ 303
Indexes created Fri Sep 26 20:09:58 GMT 2025